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|.fy  Connecticut  Iflri^lfapl  experiment  Station, 

BULLETIN    No.    82. 

MARCH,   1885. 


The  object  of  these  Bulletins  is  to  place  in  the  hands  of  those 
concerned  the  results  of  the  Station  work  as  promptly  as  possible. 

As  required  by  law,  a  package  of  each  Bulletin  is  mailed  to 
every  post-office  in  the  State.  The  package  is  directed  to  the 
postmaster,  with  a  request  to  distribute  to  farmers. 

The  Bulletins  are  also  regularly  sent  to  every  newspaper  in 
the  State,  and  to  the  Secretary  of  each  Agricultural  society  and 
Farmers'  club. 

The  Bulletins  will  be  regularly  sent,  also,  on  application,  to 
any  address  in  Connecticut. 

To  citizens  of  other  States  remitting  fifty  cents,  the  publica- 
tions of  the  current  year,  including  Bulletins  and  Annual  Report, 
will  be  mailed  as  they  appear. 

The  wish  has  been  expressed  that  a  copy  of  every  Fertilizer 
Analysis  should  be  sent  as  soon  as  made  by  the  Station  to  each 
Farmers'  club  or  local  society  in  the  State.  This  is  scarcely  prac- 
ticable. Samples  are,  as  a  rule,  not  examined  one  after  another, 
singly,  but  for  economical  work  a  considerable  number  of  anal- 
yses must  be  made,  and  are  ready  to  publish  at  the  same  time. 
Each  occasional  publication  which  the  Station  makes  is  a  Bulle- 
tin.    The  law  requires  copies  of  every  Bulletin  to  be  sent  to  each 


post-office  in  the  State,  and  the  Station  therefore  cannot  issue 
Bulletins  to  Farmers'  clubs  alone  but  must  send  impartially  to  all 
entitled  to  receive  them.  Comparatively  few  analyses  can  be 
made  and  published — in  fact,  but  few  samples  can  be  got  for 
analysis — before  farmers  purchase  their  supplies.  The  analyses 
of  previous  years  must,  therefore,  be  mostly  depended  on  as 
guides  in  buying ;  they  indicate,  in  most  cases  with  certainty,  the 
character  and  value  of  the  various  brands. 

The  disadvantages  of  our  issue  of  few  Bulletins  are,  we  believe, 
largely  compensated  to  our  farmers  by  their  being  put  in  posses- 
sion at  once  of  a  good  number  of  analyses  in  a  form  which  admits 
of  comparison. 

To  Manttfacttfrers  and  Dealers  in  Commercial  Fertilizers 
in  Connecticut. 

Attention  is  called  to  the  requirements  of  the  Fertilizer  Law 
now  in  force  in  this  State.  A  prompt  and  full  compliance  with 
its  requirements  by  manufacturers  and  dealers  this  season  will 
save  them  and  the  Station  much  annoyance.  The  full  text  of  the 
law  has  been  printed  and  circulated  in  the  Station  Bulletins,  and 
copies  will  be  sent  on  application. 

Section  2  requires  manufacturers  to  send  a  sealed  sample  of 
each  fertilizer  to  the  director  of  the  Station,  and  section  9 
requires  the  director  to  make  and  publish  annually  one  or  more 
analyses  of  each  brand ;  but  the  law  does  not  require  that  an 
analysis  shall  be  made  on  the  sample  sent  by  the  manufacturer, 
nor  is  this  commonly  done.  Such  samples  are  preserved  as  man- 
ufacturers' standards  and  are  only  analyzed  in  exceptional  cases, 
as  for  instance,  when  the  agents  of  the  Station  have  not  found 
and  drawn  samples  of  the  goods  from  dealers  in  the  State  during 
the  season.  In  such  cases  it  is  necessary  for  the  Station,  in  order 
to  comply  with  the  law,  to  make  the  analyses  of  those  brands  on 
the  manufacturers'  samples.  If,  however,  the  manufacturer  has 
neglected  to  deposit  a  sample  as  required  by  law  or  has  not 
deposited  one  during  the  current  year,  it  may  happen  that 
although  the  analysis  fee  has  been  paid,  the  Station  cannot  make 
an  analysis  of  the  goods  on  which  it  has  been  paid. 

Corrections  in  the  Station  Report  for  1884. 

While  using  the  greatest  care  to  secure  accuracy  in  the  publi- 
cation of  analyses,  occasional  errors  are  nearly  unavoidable.     On 


page  124  of  the  Report  are  certain  errata  to  which  the  following 
should  be  added  : 

Page  44,  Station  No.  1305,  Soluble  Pacific  Guano,  under  nitrogen 
guaranteed,  for  2.50  read  2.00. 

Page  62,  Station  No.  1229,  Ground  Bone,  under  cost  exceeds 
valuation,  for  20.23  read  15.23. 

Page  75,  10  lines  from  the  bottom,  1153  is  stated  to  contain 
30.03  per  cent,  of  sulphuric  acid  and  11.17  per  cent!  of  insol- 
uble matters.  The  number  should  be  1109  instead  of  1153. 
8  lines  from  the  bottom,  1109  is  stated  to  contain  34.46  per 
cent,  of  sulphuric  acid  and  6.05  per  cent,  of  insoluble  mat- 
ters.    The  number  should  be  1153  instead  of  1109. 

Page  97,  Mr.  H.  H.  Austin  states  that  the  sample  of  Cuba 
tobacco,  No.  1,  while  of  good  quality  in  other  respects  is  not 
a  free  but  a  poor  burner.  This  statement  agrees  with  the 
results  of  the  burning  trials  given  on  page  103,  and  tends  to 
confirm  Schlcesing's  theory.  The  conclusions  arrived  at  in 
the  Report,  based  on  a  misunderstanding  of  the  .burning- 
quality  of  sample  No.  1,  require  to  be  modified  in  accordance 
with  this  fact. 

The  prices  of  Mapes'  Potato  Manure,  No.  1138,  and  Corn  Manure, 
No.  1131,  page  57,  were  those  given  by  the  dealer  in 
New  Haven.  We  are  informed  by  the  manufacturer  that 
the  regular  retail  prices  are  $50.00  and  $48.00,  respectively. 

We  are  also  advised  that  the  analysis  made  in  1878  of  Mapes' 
Potato  Fertilizer,  page  53,  was  of  the  "  Ville  Formula  "  and 
is  not  properly  classed  with  the  other  analyses. 

Since  the  Bulletins  and  Reports  of  the  Station  are  constantly 
coming  into  the  hands  of  new  readers  the  following  explanations 
are  here  reprinted  for  their  benefit: 


EXPLANATIONS  CONCERNING  THE  ANALYSIS  OF 

FERTILIZERS  AND  THE  VALUATION  OF 

THEIR  ACTIVE  INGREDIENTS. 

Revised. 


Nitrogen  is  commercially  the  most  valuable  fertilizing  element. 
Organic  nitrogen  is  the  nitrogen  of  animal  and  vegetable  matters. 
Some  forms  of  organic  nitrogen,  as  those  of  blood  and  meat,  are 
highly  active  as  fertilizers ;  others,  as  found  in  leather  and  peat, 
are  comparatively  slow  in  their  effect  on  vegetation,  unless  these 
matters  are  chemically  disintegrated.  Ammonia  and  nitric  acid 
are  results  of  the  decay  of  organic  nitrogen  in  the  soil  and  manure 
heap,  and  are  the  most  active  forms  of  Nitrogen.  They  occur  in 
commerce— the  former  in  sulphate  of  ammonia,  the  latter  in  nitrate 
of  soda.  17  parts  of  ammonia  or  66  parts  of  pure  sulphate  of  am- 
monia contain  14  parts  of  nitrogen.  85  parts  of  pure  nitrate  of 
soda  also  contain  14  parts  of  nitrogen. 

Soluble  Phosphoric  acid  implies  phosphoric  acid  or  phosphates 
that  are  freely  soluble  in  water.  It  is  the  characteristic  ingre- 
dient of  Superphosphates,  in  which  it  is  produced,  by  acting  on 
"  insoluble"  or  "  reverted  "  phosphates,  with  oil  of  vitriol.  Once 
well  incorporated  with  the  soil  it  gradually  becomes  reverted 
phosphoric  acid. 

Reverted  {reduced  or  precipitated)  Phosphoric  acid  means 
strictly,  phosphoric  acid  that  was  once  easily  soluble  in  water, 
but  from  chemical  change  has  become  insoluble  in  that  liquid. 
In  present  usage  the  term  signifies  the  phosphoric  acid  (of  various 
phosphates)  that  is  freely  taken  up  by  strong  solution  of  ammo- 
nium citrate,  which  is  therefore  used  in  analysis  to  determine  its 
quantity.  "  Reverted  phosphoric  acid  "  implies  phosphates  that 
are  readily  assimilated  by  crops. 


Recent  investigation  tends  to  show  that  soluble  and  reverted 
phosphoric  acid  are  on  the  whole  about  equally  valuable  as 
plant-food  and  of  nearly  equal  commercial  value.  In  some  cases, 
indeed,  the  soluble  gives  better  results  on  crops,  in  others  the  re- 
verted is  superior.  In  most  instances  there  is  probably  little  to 
choose  between  them. 

Insoluble  Phosphoric  «<^YZ  implies  various  phosphates  not  soluble 
in  water  or  ammonium  citrate.  In  some  cases  the  phosphoric  acid, 
is  too  insoluble  to  be  readily  available  as  plant  food.  This  is  espe- 
cially true  of  Canada  Apatite.  Bone  black,  bone-ash,  South  Caro- 
lina Rock  and  Navassa  Phosphate  when  in  coarse  powder  are 
commonly  of  little  repute  as  fertilizers  though  good  results  are 
occasionally  reported  from  their  use.  When  very  -finely  pulverized 
("floats")  they  more  often  act  well,  especially  in  connection  with 
abundance  of  decaying  vegetable  matters.  The  phosphate  of 
raw  bones  is  nearly  insoluble,  because  of  the  animal  matter -of  the 
bones,  which  envelopes  it;  but  when  the  latter  decays  in  the  soil, 
the  phosphate  remains  in  essentially  the  "  reverted  "  form. 

Potash  signifies  the  substance  known  in  chemistry  as  potassium 
oxide,  which  is  the  valuable  fertilizing  ingredient  of  "  potashes  " 
and  "  potash  salts."  It  should  be  soluble  in  water  and  is  most 
costly  in  the  form  of  sulphate,  and  cheapest  in  the  shape  of 
muriate  (potassium  chloride). 

The  Valuation  of  a  Fertilizer,  as  practised  at  this  Station,  sig- 
nifies finding  the  worth  in  money  or  trade-value,  of  its  fertilizing 
ingredients.  This  value,  it  should  be  remembered,  is  not  neces- 
sarily proportional  to  its  fertilizing  effects  in  any  special  case. 

Plaster,  lime,  stable  manure  and  nearly  all  of  the  less  expensive 
fertilizers  have  variable  prices,  which  bear  no  close  relation  to 
their  chemical  composition,  but  guanos,  superphosphates  and 
similar  articles,  for  which  $30  to  $60  per  ton  are  paid,  depend 
chiefly  for  their  trade-value  on  the  three  substances,  nitrogen, 
phosphoric  acid  andpotas7i,  which  are  comparatively  costly  and 
steady  in  price.  The  money-value  per  pound  of  these  ingredients 
is  reckoned  from  the  current  market  prices  of  the  standard 
articles  which  furnish  them  to  commerce. 

The  consumer,  in  estimating  the  reasonable  price  to  pay  for 
high-grade  fertilizers,  should  add  to  the  Trade  Value  of  the  above- 
named  Ingredients,  a  suitable  margin  for  the  expenses  of  manu- 
facture, etc.,  and  for  the  convenience  or  other  advantage  inciden- 
tal to  their  use. 

The  average  Trade-values  or  cost  in  market,  per  pound,  of  the 


ordinarily  occurring  forms  of  nitrogen,  phosphoric  acid  and 
potash,  as  recently  found  in  the  New  England,  New  York  and 
New  Jersey  markets  are  as  follows: 

These  Trade-values  have  been  agreed  upon  by  the  Experiment 
Stations  or  official  chemists  of  Connecticut,  New  Jersey,  Massa- 
chusetts and  Pennsylvania  for  use  in  their  several  States. 

Trade    Values    of    Fertilizing    Ingredients    in    Raw 
Materials  and  Chemicals  for  1885. 

Following  are  the  figures  to  be  used  by  this  Station  in  making 
the  Valuations  of  Commercial  Fertilizers  for  the  season  of  1885. 

Cents  per  lb_ 

Nitrogen  in  ammonia  salts, 18 

"  nitrates, 18 

Organic  nitrogen  in  dried  and  fine  ground  fish, 18 

"  "        in  guanos,  dried  and  fine  ground  blood  and  meat, .  18 

"  "        in  cotton  seed,  linseed  meal  and  in  castor  pomace,  18 

"  "        in  fine  ground  bone, 18 

"  "         in  fine  medium  bone, 16 

"  "         in  medium  bone, 14 

"  "         in  coarse  medium  bone, 12 

"  "         in  coarse  bone,  horn  shavings,  hair  and  fish  scrap,  10 

Phosphoric  acid,  soluble  in  water, 9 

"  "      soluble  in  ammonium  citrate,* 8 

"  "     insoluble,  dry  fine  ground  fish  and  in  fine  bone,..       6 

"  "  "  in  fine  medium  bone; 5J- 

"  "  "  in  medium  bone,.. 5 

"  "  "  in  coarse  medium  bone, A\ 

"  "  "  in  coarse  boDe, 4 

"  "  "  in  fine  ground  rock  phosphate, 2 

Potash  as  high  grade  sulphate, 7£ 

"  kainite, 4£ 

"  muriate, - ... ..       4£ 

*  Dissolved  from  2  grams  of  the  ungronnd  Phosphate  previously  extracted 
with  pure  water,  by  100  c.c.  neutral  solution  of  Ammonium  Citrate,  sp.  gr.  1.09, 
in  30  minutes,  at  65°  C,  with  agitation.  Commonly  called  "reverted"  or  "back- 
gone  "  Phosphoric  Acid. 

The  above  Trade-values  are  the  figures  at  which  on  March  1st 
the  respective  ingredients  could  be  bought  at  retail  for  cash  in 
our  markets,  in  the  raw  materials  which  are  the  regular  source  of 
supply.  They  also  correspond  to  the  average  wholesale  prices 
for  the  six  months  ending  March  1st,  plus  about  20  per  cent,  in 
case  of  goods  for  which  we  have  wholesale  quotations.  The  val- 
uations obtained  by  use  of  the  above  figures  will  be  found  to 


7 

agree  fairly  with  the  reasonable  retail  price  in  case  of  standard 
raw  materials  used  in  making  mixed  fertilizers  such  as 
Sulphate  of  Ammonia,  Azotin', 

Nitrate  of  Soda,  Dry  Ground  Fish, 

Muriate  of  Potash,  Cotton  Seed, 

Sulphate  of  Potash,  Castor  Pomace, 

Dried  Blood,  Bone, 

Plain  Superphosphate,  Ground  So.  Car.  Rock. 

Trade  Values  in   Superphosphates,  Special   Manures,  and 
Mixed  Fertilizers  of  High  Grades. 

The  Organic  Nitrogen  in  these  classes  of  goods  will  be  reck- 
oned at  the  highest  figure  laid  down  in  the  Trade-values^  of 
Fertilizing  Ingredients  in  Raw  Materials,  namely,  18  cents  per 
pound,  it  being  assumed  that  the  organic  nitrogen  is  derived 
from  the  best  sources,  viz :  bone,  blood,  animal  matter,  Peruvian 
guano  or  other  equally  good  form  and  not  from  leather,  shoddy, 
hair  or  any  low-priced  inferior  forms  of  vegetable  matter,  unless 
the  contrary  is  ascertained. 

Insoluble  Phosphoric  acid  will  be  reckoned  at  4-£  cents,  it 
being  assumed  that  it  is  derived  in  good  part  from  bone  or  simi- 
lar source  and  not  from  rock  phosphate,  unless  found  otherwise. 
In  this  latter  form  the  insoluble  phosphoric  acid  would  be  worth 
commercially  only  2  cents  per  pound  or  but  one-third  as  much  as 
if  from  fine  bone.  Potash  will  be  rated  at  4^  cents,  if  sufficient 
chlorine  is  present  in  the  fertilizer  to  combine  with  it  to  make 
muriate.  If  there  is  more  potash  present  than  will  combine  with 
the  chlorine,  then  this  excess  of  Potash  is  reckoned  as  sulphate. 

In  most  cases  the  valuation  of  the  Ingi*edients  in  Superphos- 
phates and  Specials  will  fall  considerably  below  the  retail  price  of 
these  goods.  The  difference  between  the  two  figures  represents 
the  manufacturers'  charges  for  converting  raw  materials  into 
manufactured  articles.  These  charges  are  for  grinding  and  mix- 
ing, bagging  or  barreling,  storage  and  transportation,  commission 
to  agents  or  dealers,  long  credits,  interest  on  investment,  bad 
debts,  and  finally,  profits. 

In  1884  the  selling  price  of  superphosphates  in  Connecticut 
was,  on  the  average,  22.9  per  cent,  greater  than  the  Station  valu- 
ations, or  42.9  per  cent,  in  advance  of  the  wholesale  cost  of  the 
fertilizing  elements  in  the  raw  materials. 

The  selling  price  of  Special  Manures  was  but  13  per  cent, 
greater  than  their  valuations,  or  33  per  cent,  in  advance  of  the 


average  wholesale  cost  of  the  fertilizing  elements  in  the.  raw 
materials. 

The  average  cost  of  Ammoniated  Superphosphates  and  Guanos 
was  about  $40.73,  the  average  valuation  was  $33.13,  and  the 
difference  $7.60 — an  advance  of  22.9  per  cent,  on  the  valuation. 

In  case  of  Specials  the  average  cost  was  $49.95,  the  average 
valuation,  $44,20,  and  the  difference  $5.75,  or  13  per  cent,  advance 
on  the  valuation. 

To  obtain  the  Valuation  of  a  Fertilizer  (i.  e.  the  money-worth 
of  its  fertilizing  ingredients),  we  multiply  the  pounds  per  ton  of 
Nitrogen,  etc.,  by  the  trade-value  per  pound.  We  thus  get  the 
values  per  ton  of  the  several  ingredients,  and  adding  them  to- 
gether we  obtain  the  total  valuation  per  ton. 

In  case  of  Ground  Bone,  the  fineness  of  the  sample  is  graded 
by  sifting,  and  we  separately  compute  the  nitrogen-value  of  each 
grade  of  bone  which  the  sample  contains,  by  multiplying  the 
pounds  of  nitrogen  per  ton  in  the  sample,  by  the  per  cent,  of 
each  grade,  taking  y^-oth  of  that  product,  multiplying  it  by  the 
trade-value  per  pound  of  nitrogen  in  that  grade,  and  taking  this 
final  product  as  the  result  in  cents.  Summing  up  the  separate 
values  of  each  grade,  thus  obtained,  together  with  the  values  of 
each  grade  for  phosphoric  acid,  similarly  computed,  the  total  is 
the  Valuation  of  the  sample  of  bone. 

The  uses  of  the  "  Valuation"  are  twofold: 

1,  To  show  whether  a  given  lot  or  brand  of  fertilizer  is  worth, 
as  a  commodity  of  trade,  what  it  costs.  If  the  selling  price  is  not 
higher  than  the  valuation,  the  purchaser  may  be  quite  sure  that 
the  price  is  reasonable.  If  the  selling  price  is  several  dollars 
per  ton  more  than  the  valuation,  it  may  still  be  a  fair  price ;  but 
in  proportion  as  the  cost  per  ton  exceeds  the  valuation  there  is 
reason  to  doubt  the  economy  of  its  purchase. 

2,  Comparisons  of  the  valuations  and  selling  prices  of  a  num- 
ber of  similar  fertilizers  will  generally  indicate  fairly  which  is  the 
best  forthe  money. 

But  the  valuation  is  not  to  be  too  literally  construed,  for  analy- 
sis cannot  always  decide  accurately  what  is  the  for?n  of  nitrogen, 
etc.,  while  the  mechanical  condition  of  a  fertilizer  is  an  item  whose 
influence  cannot  always  be  rightly  expressed  or  appreciated. 

For  the  above  first-named  purpose  of  valuation,  the  trade-values 
of  the  fertilizing  elements  which  are  employed  in  the  computations 
should  be  as  exact  as  possible,  and  should  be  frequently  corrected 
to  follow  the  changes  of  the  market. 


9 

For  the  second-named  use  of  valuation,  frequent  changes  of  the 
trade-values  are  disadvantageous,  because  two  fertilizers  cannot 
be  compared  as  to  their  relative  money-worth,  when  their  valu- 
ations are  deduced  from  different  data. 

Experience  leads  to  the  conclusion  that  the  trade-values  adopted 
at  the  beginning  of  a  year  should  be  adhered  to  as  nearly  as  pos- 
sible throughout  the  year,  notice  being  taken  of  considerable 
changes  in  the  market,  in  order  that  due  allowance  may  be  made 
therefor. 

The  Agricultural  value  of  a  fertilizer  is  measured  by  the  benefit 
received  from  its  use,  and  depends  upon  its  fertilizing  effect,  or 
crop-producing  power.  As  a  broad,  general  rule,  it  is  true  that 
Peruvian  guano,  superphosphates,  fish-scraps,  dried  blood,  potash 
salts,  plaster,  etc.,  have  a  high  agricultural  value  which  is  related 
to  their  trade-value,  and  to  a  degree  determines  the  latter  value. 
But  the  rule  has  many  exceptions,  and  in  particular  instances  the 
trade-value  cannot  always  be  expected  to  fix  or  even  to  indicate 
the  agricultural  value.  Fertilizing  effect  depends  largely  upon 
soil,  crop  and  weather,  and  as  these  vary  from  place  to  place,  and 
from  year  to  year,  it  cannot  be  foretold  or  estimated  except  by 
the  results  of  past  experience,  and  then  only  in  a  general  and 
probable  manner. 

Fertilizer  Analyses. 

1343.  Ashes  from  Cotton  Seed  Hulls.  This  sample  represents 
the  hard  portion  or  clinker  which  is  screened  out  from  the  fine 
ashes  and  is  not  sold. 

1344.  Ashes  from  Cotton  Seed  Hulls.  Sampled  by  H.  S. 
Frye,  Poquonock,  from  a  car-load  lot  at  Suffield. 

1343  1344 

"Water, 4.33  13.82 

Sand,  and  insoluble  in  acid, 39.32  6.18 

Potash,  soluble  in  water, 9.20  19.51 

Potash,  insoluble  in  water, _           8.00  2.81 

Phosphoric  acid,  soluble  in  ammonium  citrate, 5.45  )  „  „. 

Phosphoric  acid,  insoluble  in  ammonium  citrate, 3.61  ) 

Cost, |39.00 

Valuation, , 42.38 

The  sample  1343  has  considerable  value  as  a  fertilizer,  though 
much  inferior  to  the  other  sample.  Much  of  the  potash  in  it^is 
combined  with  silicic  acid  in  silicates  which  are  readily  decom- 
.posed  by  an  acid. 


10 

1347.  Chittenden's  Complete  Fertilizer  for  Tobacco  made  by 
the  National  Fertilizer  Co.,  Bridgeport.  Sampled  May  19,  1884, 
by  T.  R.  Atwood,  Newington,  from  stock  of  J.  Dix  &  Co.,  Hart- 
ford, and  sent  to  this  Station  March  4,  1885,  for  analysis. 

The  sample  was  in  a  tin  box,  tightly  closed  but  linsealed.  Its 
analysis  is  here  given  because  it  is  the  only  sample  of  that  brand 
which  has  been  received  during  the  year,  and  because  the 
Director  is  required  by  law  to  annually  make  and  publish  one 
analysis  at  least  of  each  brand  of  goods  sold  in  the  State.  The 
Trade-values  which  were  in  use  last  year  have  been  applied  in 
making  the  valuation. 

Analysis  and  Valuation. 

1347 

Found.  Guaranteed. 

Water,  10.91 

Nitrogen  of  organic  matter,  2.86                          3.3 

Soluble  Phosphoric  Acid, 4.42)                        fi„ 

Reverted  Phosphoric  Acid, 2.70) 

Insoluble  Phosphoric  Acid, 4.41 

Potash,... 4.66                           4.3 

Chlorine, .88 

Cost  per  ton, $45.00 

Valuation  per  ton, 35.17 

Analyses  of  Bone. 

1349.  Rogers  &  Hubbard  Co.'s  Damp  Bone  Saw  Dust. 

This  is  cut  by  the  bone  saws  which  run  in  water,  and  is  allowed 
to  settle  in  tanks  and  then  drained  off  in  heaps. 
This  sample  contained  46.39  per  cent,  of  water. 

1350.  Rogers  &  Hubbard  Co.'s  Ground  Bone  Fine  A.  X. 

1351.  Rogers  &  Hubbard  Co.'s  Raw  Knuckle  Bone  Meal. 

1352.  Rogers  &  Hubbard  Co.'s  Raw  Knuckle  Bone.  Extra 
Fine,  A. 

The  above  are  manufactured  by  the  Rogers  &  Hubbard  Co., 
Middletown,  and  were  sampled  March  9th  by  the  Station  agent. 

1353.  Peck  Brothers'  Kitchen  Bone.  Manufactured  by  Peck 
Brothers,  Northfield.  Sampled  and  sent  by  C.  H.  Cables,  Thom- 
aston. 

1354.  Peter  Cooper's  Ground  Bone.  Manufactured  by  Peter 
Cooper's  Glue  Factory,  N.  Y.  Sampled  and  sent  by  C.  H. 
Cables,  Thomaston.  This  is  a  steamed  bone,  being  a  by-product 
in  the  glue  manufacture. 


11 


Mechanical  Analyses. 


1349 

1350 

1351 

1352 

1353 

1354 

Finer  than 

-6V  inch, 

97 

14 

32 

25 

8 

40 

ii 

2S                   

3 

19 

33 

15 

15 

15 

u 

1           11 
l£                 

. 

48 

35 

33 

32 

24 

u 

1         il 

. 

19 

._ 

27 

25 

21 

Coarser  than 

I         a 

"6                  

__ 

.. 

.. 

20 

.. 

100 


100 


100 


100 


100 


100 


Chemical  Analyses  and  Valuations. 

1349  1350  1351    1352    1353  1354 

Nitrogen,... 2.35  4.  LI  3.96     3.96     4.10  1.62 

Phosphoric  Acid 15.67  19.51  24.57         25.15         20.91  31.70 

Cost  per  ton* $25.00  34.00  38.00         36.00         35.00  23.75f 

Valuation  per  ton, $27.19  32.03  39.58         37.80         31.13  39.06 

*  At  the  mill.  f  In  New  York. 


S.   W.  JOHNSON,  Director. 


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Connecticut 

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